Selvage-trimming mechanism



Jan. 1, 1929. 1,697,812

' H. A. DAvls SELVAGE TRIMMING MECHANISM Filed April 26, 1928 Fig. 1.

Y Harry A. Davis byfMdMMW-r Ays Patented Jan. 1, i929.

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snrivaenyrnrnnne Meenemen;

Application filed April 26, 1922.

the invention will appear more fully from the acco mpanyingv description and drawings and Will be ,particularly defined:V by the claims.

ll-he cutting mechanism with which the invention isco-nfcerned may be carried by any suitable support but is here shown as con veniently carried bythe shank. ot a thread cutting. temple- As the construction and operation of: the temple is Well. known. and familiar to those skilled in4 the. art, and as the. invention. is not concerned with other features of the loom construction, it. is sutticient in connection. withl the disclosureof .a preferred. form. ot .the invention simply to illustrate af temple and a portion of the cloth being Woven.

the drawings:

Fig. l is atop plan vicW of a preferred construction ot theinvent-ion and the parts with Whichit is. immediately associated..

Fig. 2 is a side elevation ot, the construction of theinvention shown in Fig, 1 with the supporting rod shown in cross section.

F is a Viewv in cross section taken on the line 3 3 of Fig'l.

Fig. tis an elevati-on looking atthe forward end of the construction.

Fig. 5 is a detail in perspective to show particularly the guiding edges which divert the filling ends into the eld ot action of the cutting mechanism.

During the operation of Weaving cloth, iilling ends are constantlyl being lett projecting along` the eelvage, particularly in the case of the automatic filling replenishing looms wherein upon each change oit filling carrier two ends. are left projecting. Even the cutting mechanism associated with the temple fails to sever all of these ends and seldom severs any of the ends suticiently y7' of the Ycloth and the point Where the' Serial No. 2223911.

close vto the selvage. As a result, it is`r necessaryv during the linishing operationson the cloth to remove the filling ends at'the selvage by various. means. The present inventionprovides a mechanism, for trimming oii' all of the filling: ends left projecting from the selvage close to the selvage so that no further removal oi such iiflling ends is required. in. the finishing of the clot-h. The mechanism ot this invention may be employed` by itself,v but it isv desirablfy associated With the usual thread cutting temple,`

and. acts upon the filling, endsafter they lia-ye passe-d through the temple. Whenl so associated, the temple shank itself forms a convenient `support for the cutting mech-v anism ot this invention.

In the construction illustrated, the temple stand. l is supported as usual from the bneast beam or other portion ot the loom rameand extends rearwardly. ln this stand is mounted. the shank 2. which carries at its: rear end the temple head 3T: having the lat` erally projecting port-ionel in, which. is journailed. the usualpin roll: The temple shank and. head have a reciprocatory. movement in the stand, being movedl forwardly at each beatfup. by the lay o'l the" loom coming in: conta-ct with a.; heel depending from 'the temple shank and head and. being moved rearwardly by the usual spring contained in the sta-'nd l. This templeis shown ,as pro.- vided with avfamiliar typefof filling cutting mechanism comprising a fixed cutter blade` 5 and a movablecutter blade@ actuatedat each beat-up of the lay and thus severing the iilling ends brought Within its field of action, particularly the filling ends extending from the selvage to a illing carrier discharged from the loom upon repienishment taking place. It will be noted that there is always a substantial distance between the selvage filling end is cutby suchdevice'as the cutter blades 5 and V6 because the selvag'e cannot extend to the very end' of the pin roll of the temple and this cutting mechanism is located beyond the end of thepin roll. Thus even filling ends severed'by the templethread cutting mechanism are'stillv lett projecting from the selvage to a substantial length. rEhe mechanism ofI this invention removes such ends andl any and all tdlingl ends left projecting fromthe selvageby a cutting oplOl) eration which takes place close tothe selvage.

In a simple and preferred construction of the invention illustrated, the shank 2 of the temple is conveniently utilized as the main support. A rod 8 is-rigidly secured in and extends laterally from the shank 2 above the plane of `the cloth 9. A bracket 10 is mounted on this rod to slide thereon and preferably to rotate thereon. This bracket is yieldingly slid away from the support toward the cloth by a helical spring 11 surrounding the rod 8 between the bracket and the shank 2. The bracket 10 presents a vertical bore in which is mounted a stud 12, the stud being capable of rotary movement in the bracket and preferably also of vertical movement.. i

The stud extends from the base which supports and positions the cutting mechanism of this invention. The characteristic of the base is that it is positioned both by the plane of l, the cloth and the edge of the cloth so as under all conditions to maintain the field of action of the cutting mechanism close to the edge. T he base therefore presents a surface resting upon and engaging at least one surface of the cloth and edge guiding surfaces engaging the edge of the cloth. In the construction illustrated, the base presents two substantially fiat parallel plates between which the cloth passes and two edge guiding surfaces on one of these plates held against the edge of the cloth, while the cutting mechanism is located between these edge guiding surfacesand therefore positioned close to the edge. The upper plate 13 of the base is of a generally rectangular shape with its bottom surface adapted toV rest on top of the cloth. This plate is of sufficient thickness to give it rigidity and is rigidly secured to the stud 12. The lower plate 111 of the base may be relatively thin and of the general shape of the upper plateand is adapted to rest against or closely adjacent to the lower surface of the cloth. This lower plate is shown as provided with the edge guiding surfaces. For this purpose the plate at the front and rear 4ends is shown as provided with narrow integral tongues projecting up to form edge guides and back over the plate 13 to enable a supporting connection to be made for the Vplate 14 ,from` the plate 13. These tongues 15 and 16 have threaded into their free ends set screws 17 seated in the plate 13 and are provided with lock nuts 18, By adjusting these set screws,'the spaceV betweenthe plates 13 and 14 may be varied in y accordance with the thickness of the cloth and to Vadjust therfriction between the base and the cloth.

standing closeto the edge of the cloth and normal to the plane of the cloth and a rotary cutter cooperating therewith. The fixed blade 19 forms a portion of a plate 20 held in place by `fitting over a shaft 21 journalled in casing 22 forming an upstanding part of the plate 13 and also fitting over a stud 23 on the side of the plate. lThe cooperating rotary cutter 2li is shown as of the star wheel type and is rigidly connected to the shaft 21. As this cutter is rotated, its curved cutting edges 25 will cooperate with the cutting blade 19 to shear the filling ends and as the cutting field or sld of action of these cooperating blades is immediately at the selvage, it will be seen that the filling ends will be severed close to the selvage, ne rotary cutter is held upagainst the fixed cutter' blade to produce the desired shearing act-ion by a helical spring 26 on the shaft 21 ben tween the casing 22 and a washer 27 on the end of the shaft.

The required rotary movement of the cutter member to effect the cutting action is here shown as secured by therelative movement which takes place between theY cloth as it advances through the loom and the base upon which vthe cutting mechanism is supported. This relative movement between the cloth and the base is further amplified by the relative movement between the shank 2 of the temple and the cloth which takes place due to the forward Vand rearward movement of the temple shank in the stand. A pin roll 28 similar to the usual temple roll is secured to the shaft 2l within the casing 22 so as to be in constant engagement with the cloth passing through the base and the lower plate 14 of the base is depressed at 29 beneath this pin roll so as to enable the pins to get a firm grip on the cloth. Thus it will be seen t-hat, as Athe cloth moves forwardly through the base due either or both to the advancing movement of the cloth as it is woven and the rearward movement of the temple after it has been moved forwardly by the lay, the pin roll 28 will rotate the shaft 21 to bring one or more of the cutting edges 25 of the rotary cutter into cooperation with the fixed cutter blade 19 thus to sever any filling ends brought between them close to the selvage.

The lfilling ends which project from the selvage such as are sbo-wn at 30 are often against one of the surfaces of the cloth. It

is important, therefore, to provide means for insuring that these ends shall be so positioned that they shall pass with certainty between the cutting blades. To secure this result the base is shown as provided with guides extending obliquely to the edge of the cloth vand engaging respectively the upper and lower surfaces of the cloth and acting to divert these filling ends mer/gsi e into the field ofl action of the cut-ting meclia- The upper plate is cut away nism. the rear or formed to present the oblique guiding edge 8lresting against' the top surface of the cloth and thus serving to divert any filling ends extending over against the top'surface of the cloth in between the cutter blades. The other guide is conveniently formed' as an extension 32 from the fixedcutter plate 20; extends beneath the cloth against the lower surface and in an oblique direction subst-antially parallel with the guide 8l. There is thus formed a lower oblique guide which acts to divert any filling ends curledrv or lyingagainst the lower surface of the clot-.li into the field of action ef the cutting mechanism.

The principle of operation of the ini-i tion will be apparent. Y The'base which supports the cutting mechanism having a guiding surface engaging and conforming to the plane of the cloth and having edge guiding surfaces. adaptedl to rest against the cloth is self-adjusting so as to 'position the cutting mechanism close to the edge of the cloth. This self-adjustment is secured in the construction illustrated by the ability of' the base to move bodily laterally of the shaft 8 and to rotate on the stud 12. Furthermore, the plane of the cloth may, and usually does, vary with respect to the shaft 8a the base is preferably permi ted to conform to any such variations by reason of the rotary movement; permitted between the bracket 10 andthe shaft 8 and the sliding movement permitted between the bracket l() and the stud l2. The spring' ll constantly acts to hold' the base with the edge guides against the edge of the cloth. andi with the various connections described make the base selfeadjusting both to the plane and the direction of the edge of the cloth. Thus the filling ends diverted by the oblique guides.

pass successively into the field of action of the cutting mechanism and are uniformly severed close to the selvagc.

Having thus described the in vention. what is claimed as new7 and desired to be secured by Letters Patent, is:

l. Selvage trimming mechanism for looms comprising a support mounted on the loom frame and extending adjacent vthe selvage forward of the fell. a base mounted on the support having guiding surfaces to engage the surface and the edge of the cloth and mova le to conform to the plan-e of the cloth and to the direction of the edge of the cloth, means acting yieldingly to force the edge engaging surface of the *base against'the edge of the cloth, cutting mechanism on the base positioned thereby to present field of action close to the edge of the cloth and means for operating the cutting mechanism to sever close to the edge filling ends extending therefrom.

This extension 2. Selvage trimming mechanism= for looms comprising a support mountedi on the loom frame andy extending adjacent lthe selvage forward of the fell', a, base: mounted on the support having guiding` surfaces to engage the surface andl the edge of the cloth land movable to conform to the plane of theclotli and to the direct-ion ofthe yedge of the cloth7 means acting yieldingly to force the edge engaging' surface of the base against the edge of the cloth, cutting mechanism on, the. base positioned thereby to present its iiel'cli of action close tothe edge. of the cloth, a cloth engaging i :lli journalled in.y the base and rotated by the relative longitudinal. movement between the cloth and the base and connections betweentlie roll and cutting' mechanism to actuate the lat-ter upon the rotation of the former to sever close to the edge filling ends extending therefrom.

3. Seivage trimming mechanism for looms comprising a support mounted on the loom frame and extending adjacent the selvage forward of` the fell, means for periodically reciprocating the support forward and rear.- ward7 a base mounted on the support hailing guiding surfaces to engage the surface and the edge of the cloth andmovable to conform to the plane of the cloth andy tothe direction of the edge of the cloth7 means aetingyield'- ingly to force the edge engaging surface of the base against the edge of theV cloth, cutting mechanism on-the base positioned thereT by to present its field' of action close tothe edge of the cloth and means actua-ted" by the relative longitudinal movement bet-Ween the cloth and the support to operate the cutting mechanism to sever close tothe edge filli ends extending therefrom. l

4f. Selvage trimming mechanism for-loom; comprising a support mounted on the loom frame and extending adjacent the. selva-ge forward of the fell, a base mountedv on the support having guiding surfaces to engage the surface and the edge of the cloth and movable to conform to tlieplane of the cloth and to the direction of the edgeof the cloth', yielding means between the support and the. base acting to force the edge engaging surface of the base against the edge of the cloth, cutting mechanism on the base positioned thereby to presentits field'. of action close to the edge of the cloth and means foroperating the cutting mechanism to sever close tothe edge filling ends'extending therefron'i.

5. Seli/'age trimming mechanism for looms comprising a support mounted on the loom frame and extending adjacent the selvag'e forward of the fell, a base mounted on the support having guiding' surfaces to'V engage thesurface and the edge of the cloth and movable to conformto the-plane ofthe cloth and tothe direction of the edge of the .cloth` cutting mechanisn'i on theV base positioned thereby to present its iieldiof. action closeito ill! lili

the edge of the cloth and'means for operating-the cutting mechanism to severV close to the edge filling ends extending therefrom.

lf5. Selvage trimming mechanism for looms comprising the construction defined in claim 5, together with guides on the base extending obliquely to the edge of the cloth and engaging respectively the upper and lower surfaces of the cloth and acting to divert filling ends extending from the edge of the cloth into the'field of action of the cutting mechanism.

7. Selvage trimming mechanism for looms comprising a base having guiding surfaces to engage the surfaces and the edge of the cloth and self-adjustable with respect to the cloth to conform to the plane and adjacent edge of the cloth, cutting .mechanism on the base positioned thereby to present its field of action close to the edge of the cloth and means for operating the cutting mechanism to sever close to the edge filling ends extending therefrom. Y

8. Selvage trimming mechanism for 'looms comprising a base having guiding surfaces to engage the surfaces and the edge of the cloth and self-adjustable with respect to the cloth to -conform to the plane and adjacent edge of the cloth, cutting mechanism on the base positioned thereby to present its iield of action close to the edge of the cloth, a cloth engaging roll journalled in the base and rotated by the relative longitudinal movement between the cloth and the base and connections between the roll and cutting mechanism toactuate the latter upon the rotation of the former to sever close to the edge filling ends extending therefrom.

9. Selvage trimming mechanism for looms comprising a support mounted on the loom frameand extending adjacent the selvage forward of the fell, a base mounted on the support and self-adjustable with respect thereto to conform to the plane an d adjacent edge of the cloth, cutting mechanism on the base positioned thereby to present its field of action close to the edge of the cloth and means for operating the cutting mechanism to sever close to the edge filling ends extending therefrom. y

10. Selvage trimming mechanism for looms comprising the construction defined in claim 9, together with guides on the base extending obliquely to the edge of the cloth and engaging respectively the upper and lower surfaces of the cloth and acting to divert filling ends extending from the edge of the cloth into'the field 0f action of the cutting mechanism.

11. Selvage vtrimming mechanism for looms comprising a support mountedon the loom frame and extending adjacent the selvage forward of the fell, a base mounted on the support and self-adjustable with respect thereto to conform to the plane and adjacent mechanism for looms comprising a support mounted on the:

loom frame and extending adjacent the selvage forward of the fell, a rod extending laterally from thesupport, a bracket mounted to slide on the rod, means for yieldingly sliding the bracket on the rod away from the support toward the cloth, a base mounted on the bracket to rotate on an axis extending transversely of the rod, the said base resting on one surface of the cloth and positioned thereby in the plane of the clothand having edge guiding surfaces engaging the edge of the cloth to position the base in conformita7 to the direction of the edge of the cloth, cutting mechanism on-the base positioned thereby to present its field of action close to the edge of the cloth and means for operating the cutting mechanism to sever close to the edge iilling ends extending therefrom.

13. Selvage trimming looms comprising a support mounted on the loom frame and extending adjacent the sel vage forward of the fell, a rod extending laterally from the support, a bracket mounted to rotate and slide on the rod, means for yieldingly sliding the bracket on rod away from the support toward the cloth, a base mounted on the bracket to rotate and slide on an axis extending transversely of the rod, the said base resting on one surface of the cloth and positioned thereby in the plane of the cloth and having edge guiding surfaces engaging the edge of the cloth to position the base in conformity to the direction of the edge of the cloth, cutting mechanism on the base positioned thereby to present its field of action close to the edge of the cloth and means for operating the cutting mechanism to sever close to the edge filling ends extending therefrom.

14. Selvage trimming mechanism Y for looms comprising a base presenting two parallel plates between which the clothl passes7 guiding surfaces on the base engaging the edge of the cloth and positioning the base in line with the edge of the cloth, cutting mechanism on the base positioned thereby to present its field of action close to the edge of the cloth and means for operating the cutting mechanism to sever close to the edge filling ends extending therefrom.

15. Selvage trimming mechanism commechanism for lll?) prising the construction defined in claim 14, together with means for adjusting the plates toward and from each other to vary the space through which the cloth passes.

16. Selvage trimming mechanism for looms comprising the construction defined in claim 14, in which the cutting mechanism is mounted on the base between the edge guidino` surfaces.

17. elvage trimming mechanism for looms comprising the construction defined in claim 14, in which the cutting mechanism is mounted on the hase between the edge guiding surfaces and in which the upper pla-te at the rear of the cutting mechanism is provided with a guide extending obliquely t-o the edge of the cloth and engaging the upper surface oit' the cloth and acting to divert lling ends extending up from the edge of the cloth into the eld of action oit' the cutting mechanism.

18. Selvage trimming mechanism for looms comprising the construction defined in claim 14, in which the cutting mechanism is mounted on the base between the edge guiding surfaces and in which the hase is provided with a guide extending beneath the cloth in the rear ot the cutting mechanism obiiquely to the edge of the cloth and in engagement with the lower surface thereof to divert iiiling ends projecting down from the edge of the cloth into the ield of action of the cutting mechanism.

In testimonT whereof, I have signed my name to this specification.

. HARRY A. DAVIS. 

